#include <iostream>
using namespace std;

#define N 26

unsigned long long c[N];

int main()
{
	for ( int i = 0; i < N; i++ ) {
		cin >> c[i];
	}

	auto x = c['h' - 'a'] * c['e' - 'a'] * c['w' - 'a'] * c['r' - 'a'] * c['d' - 'a'];

	auto y = c['o' - 'a'];
	x *= (y / 2) * (y - (y / 2));

	auto z = c['l' - 'a'];
	x *= (z / 3) * (z - (z / 3)) * (z - (z / 3) - 1) / 2;

	cout << x << endl;

	return 0;
}